Combined electrical and mechanical safety lock for vault doors



' Jniy, s, 1927. 1,635,015

W. C. DILLON COMBINED ELECTRICAL AND MECHANICAL SAFETY LOCK FOR VAULT DOORS Filed sept. so. li-20 2 sheets-sheet.;

' C 163s 075 July 5, 1927. w C DILLON A COMBINED ELECTRICAL AND MECHANICAL SAFETY LOCk FOR VAULT DOORS f Filed sept.so, 1920 2 shuts-sneu 2 I' 4S v 1 BZ /5' 41265 x Y v n 2//0/2 @fj/f5 je a www Patented July V, 1927.

UNITED v*s'rniss y l 1,635,075 PATENT ori-ica WILLIAM C. DILLON, OF FORT DODGE, IOWA, ASSIGNOR TO DILLON BANK PROTECTION SERVICE, A CORPORATION.

i COlIIBINED` ELECTRICAL AND MECHANICAL SAFETY LOCK FOR 'VAULT DOORS.

Application filed September 30, 1920. Serial No. 413,799.

The object of my invention is to'provide a combmedfelectrlcal and mechanical safety lock for vault doors, which device is of simple and inexpensive construction and adaptedto 5 automatically lock a vault door when the ordinary combination is interfered with, and alsoL adapted to sound an alarm when ythe safety lock is moved to operative position. My present invention may be used in combim nation with the type of safetylocks shown Ain my co-pending application, Serial Number 357,658, filed February th, 1920.

With these and other objects in View, my invention consists in the construction, ar-

rangement and combination of the rvarious parts of my device, whereby theohjects con templated are attained, hereinafter ymore fully forth, pointed out in my claim, and illustrated in theaccompanying drawings,

in which: f

Figure 1 shows an elevation ofthe .interior of a vaultk door equipped with a combined electrical and mechanical safety lock, em-

f bodying my invention. l

- Figure 2 shows a detail, sectional view taken on the line 2 2 of Figure 1.

Figure 3 shows a detail, sectional view of thefsupporting shaft and the safety lock thereon.

Figure 4 shows a similar view of a slightly modified form of my device. f

rFigure 5 shows a detail, sectional View illustratingthe mounting of a slightly modified form of my device on thedoor.

Figure 6 shows an elevation of the interior of the vault door, equipped with my device.

Figure 7 shows a det-ail, sectional View of a portion of the electrical equipment.

- Figure 8 shows a detail, sectional view taken on the line 8-8 of Figure 7; and

Figure 9 shows a diagram ofthe electrical circuit. v

In the accompanying drawings, I have used the reference numeral 10 to indicate k4.15 generally the door of a vault or safe. Thel door has the bar or inwardly extending ilangell spaced from itsedges. The locking bolts 12 are slidably mounted in the bar 11 and are fixed to an upright strip 13.,

I have shown the ordinary combination lock 14, from which projects the locking' bolt l5 adapted to coact with the locking mechanism 16 ordinarily found on such a door.

My yimproved device includes a shaft 17 l preferably screw-threaded for the greater portion of its length, as shown. One end of the shaft 17 is secured to the bar 11, preferably by screwing it into a suitable hole in the said bar. A lock nut 18 is preferably mounted on the shaft 17 adjacent to the bar 11, and another lock nut 19 may be mounted on the other end of the shaft 17, on the end of the bar 11, as illustrated in the form shown in Figure 5, if desired.

Mounted on the shaft 17 is a safety lock 20, which is preferably screw-threaded, so that it can be rotated on the shaft 17 and also adjusted longitudinally thereof. Lock nuts 21 and 22 are preferably mounted on the shaft 17 on opposite sides of the safety lock 20.

In Figure 4, I have shown a safety lock 23, similar in form to the lock 20, with the exception that the hole 24 therethrough is larger and not screw-threaded.

lVhere the form of the lock, as shown at 23, is employed, the lock nuts 21 and 22 are used, as illustrated in Figure 4.

Mounted in the shaft 17 is an arm or rod 25 on which are lock nuts 26 and 27 on opposite sides of the shaft 17. The arm or rod 25 extends away from the shaft 17 at right angles thereto and has at its outer end, a laterally fiattened extension 28 arranged substantially parallel with the shaft 17, and provided with a series of holes 29.

Selectively received in one of the holes 29 is one end of the strong coil spring 30. The other end of t-he coil kspring 30 is extended through one of a plurality of holes 31 in the safety lock 2O or 23, as the case may be, as illustrated particularly in Figurev 2.

The tension of the spring 30 tends to hold the safety lock 20 in its position illustrated byv dotted lines'in Figure 2, where it stands in the path of travel of the strip 13. In order to hold the safety lock 20 in its position, shown in full lines in Figure 2, where it will be out of the way of the strip 13, for permitting the ordinary use of the door and the unlocking of the door for ordinary purposes, I have provided the following means:

Connected with the lock 20 at a pointsubstantially between the center of the shaft 17 and the point where the spring 30 is connected with said lock is a rod or wire or H0 the like 32, which is extended from the lock 20 around a pin 33 mounted on the combination lock 14, and thence toward the free edge of the door 10 to a pin 34 on the bar 11, to which latter pin, the member 32 is fastened.

It will be seen that when the member 32 ot the proper length, the satety lock 2t) wi be held in its position shown in Figure 2, extending downwardly troni the shalt 1T agaist the tension o'l. the spring 'lt. rl`he rod or wire "lo is secured to the salety lock is ll 0.4 Q0 by projecting a latcrallv extending end ot said rod into a hole in the saiety lock. The rod 32 is also pivot-ally connected with IAhe pin 3;.

It will be noted that should the combina- [ion box be disturbed ltrom its position by shooting, punching or burning, the rod l2 will be released*` wherenpon` the spring 250 will swing the safety lock 2l) trom its position shown in Figure 2 in the tull lines to its position shown in dotted lines in said ligure, where it will stand in the path ot the strip 13.

It thus appears that ii" i' in the Ordinary way, and lock is intertered ith. tli will be moved to position 'tor preventing the movement of the strip 1&3 Yt'or releasing the locking bolts 12 :trom locking position. lt would then be impossible to u le vault is locked the, combination i, sa'lietjv lock Q0 nleck the vault door without releasing the f-atetv lock Qt), which practically could not be done by a burglar.

1When my locks are installed a diafi'ran'i of the door is retained, which maler;` it possible to determine exactly where the satfety lock is located. so that the persons in possession ol the proper inioimation can release my safety lock with comparative e: 1e.

is a matter oit itact. such it-leasing is accomplished by drilling through the door and inserting a small tool into the hole 235i in the lock 20, shown by the. dotted lines in ligure 1, whereupon the lock 2O may be pulled to position, where it is out ot the path ot the strip 13, which may then he slid or moved tor unlocking the bolts l2.

In connection with my sal'fety lock above described` l have provided an electrical device Vfor indicating that the combination has been tampered with.

Mounted on the arm 25 are slightly spaced strips o't insulation lo and il?, bel ween which there is supported a. tlat spring or the like 238, having an elongated slot 115i. (')n the arm between the insulation strips lt and 3T is au insulziting sleeve 4t).

ilionnted on the shaiit 1T is a pin or bolt or the like 41 on which an insulated sleeve 42. The spring tl is mounted on the arm and pin 41 with the sleeves et() and 42 wire 44. The lock 20 has a contact point 45, which may be a silver' screw, which will not corrode, which is so located that when the lock 2() stands in its position illustrated in tull lines in Figure Q the point 45 will be substantially spaced trom the spring end 43, but when the lock 20 is moved to its position shown in dotted lines in Figure 2, the point 45 will engage the portion 43 ot the spring 38 tor causing a circuit through the wire 44, the battery or other source of electrical energy 46, the wire 47, the alarm device 48, the wire 49, the door, the shaft 1T and the lock 20.

rlhe simplicity of my device is obvious from the foregoing description.

It will be seen that the lock 2t) is longitudinally adjustable on the shaft 17, which makes it easy to adjust my salety lock device for use with vault doors ol' ditl'erent kinds.

By adjusting the lock 20 longitudinally on the shaft 17 it may be moved to proper position :t'or coacting with the strip 13, whatever the width ot such strip may be.

By adjusting the end ot the spring 3U tio dilli'erentholes 2S), the position ol.1 such spring may be adjusted to correspoml to the adjustment of the safety lock 20.

@n account of the use ol? the spring 3S with the slot 39, it will. be seen that by adjusting the pin 41, which preferably has the torni ot a screw bolt, and the lock nut 5t), shown in Figure 1, the spring 238 may be adjusted longitudinally to place itl in proper position for coacting with the contact point 45 in any of the adjusted positions ol the safety lock 20.

It is obvious that changes may he made in the construction and arrangement ol my improved combined electrical and mechanical safety lock for vault doors, without departing 'from the real spirit and purpose ol my invention, and it is my intention to cover by my claim, any modilied toi-ms olE structure or use of mechani lal equivalents` which may be reasonably included within its scope.

l. claim as my invention:

A circuit closing mechanism adapted lor use on an auxiliary lock having a supporting rod and a locking lug rotatably and longitudinally adjustable thereon, said mechanism comprising bolts extending from said supporting rod, a contact element comprising a strip of metal having a longitudinal slot therein through which said bolts extend, means for allowing longitudinal adjustment of said strip on said bolts whereby said strip may be adjusted longitudinally relative to said supporting rod and a contact element on said lug adapted to coact with said strip when said lng is in one o'lI its adjusted positions.

WILLIAM C. DILLON. 

